java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 15:22:43,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 15:22:43,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 15:22:43,081 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-03 15:22:43,129 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2018-12-03 15:22:43,151 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 15:22:43,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 15:22:43,152 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 15:22:43,152 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 15:22:43,154 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 15:22:43,155 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 15:22:43,155 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 15:22:43,155 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 15:22:43,155 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 15:22:43,156 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 15:22:43,156 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 15:22:43,156 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 15:22:43,156 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 15:22:43,156 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 15:22:43,157 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 15:22:43,157 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 15:22:43,158 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 15:22:43,158 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 15:22:43,158 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 15:22:43,158 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 15:22:43,158 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 15:22:43,159 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 15:22:43,159 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 15:22:43,159 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 15:22:43,159 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 15:22:43,159 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 15:22:43,160 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 15:22:43,160 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 15:22:43,160 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 15:22:43,160 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 15:22:43,160 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 15:22:43,161 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 15:22:43,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:22:43,161 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 15:22:43,161 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 15:22:43,161 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 15:22:43,162 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 15:22:43,162 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 15:22:43,162 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 15:22:43,162 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 15:22:43,162 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 15:22:43,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 15:22:43,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 15:22:43,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 15:22:43,213 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 15:22:43,213 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 15:22:43,214 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl [2018-12-03 15:22:43,214 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl' [2018-12-03 15:22:43,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 15:22:43,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 15:22:43,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 15:22:43,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 15:22:43,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 15:22:43,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 15:22:43,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 15:22:43,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 15:22:43,293 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 15:22:43,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... [2018-12-03 15:22:43,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 15:22:43,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 15:22:43,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 15:22:43,316 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 15:22:43,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:22:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 15:22:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 15:22:43,643 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 15:22:43,643 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 15:22:43,644 INFO L202 PluginConnector]: Adding new model cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:22:43 BoogieIcfgContainer [2018-12-03 15:22:43,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 15:22:43,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 15:22:43,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 15:22:43,648 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 15:22:43,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:22:43" (1/2) ... [2018-12-03 15:22:43,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c18ec2 and model type cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:22:43, skipping insertion in model container [2018-12-03 15:22:43,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:22:43" (2/2) ... [2018-12-03 15:22:43,652 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b.c.i_4.bpl [2018-12-03 15:22:43,662 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 15:22:43,670 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 15:22:43,688 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 15:22:43,723 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 15:22:43,723 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 15:22:43,723 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 15:22:43,723 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 15:22:43,724 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 15:22:43,724 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 15:22:43,724 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 15:22:43,724 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 15:22:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-12-03 15:22:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 15:22:43,746 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:22:43,747 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 15:22:43,750 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:22:43,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:22:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 15:22:43,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:22:43,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:22:43,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:22:43,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:22:43,808 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:22:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:22:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:22:43,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:22:43,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 15:22:43,910 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:22:43,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:22:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:22:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:22:43,933 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-12-03 15:22:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:22:44,008 INFO L93 Difference]: Finished difference Result 10 states and 15 transitions. [2018-12-03 15:22:44,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:22:44,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 15:22:44,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:22:44,021 INFO L225 Difference]: With dead ends: 10 [2018-12-03 15:22:44,021 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 15:22:44,025 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:22:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 15:22:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 15:22:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 15:22:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-12-03 15:22:44,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 3 [2018-12-03 15:22:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:22:44,068 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-03 15:22:44,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:22:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions. [2018-12-03 15:22:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 15:22:44,069 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:22:44,069 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-03 15:22:44,069 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:22:44,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:22:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash 28852267, now seen corresponding path program 1 times [2018-12-03 15:22:44,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:22:44,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:22:44,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:22:44,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:22:44,072 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:22:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:22:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:22:44,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:22:44,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 15:22:44,158 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:22:44,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:22:44,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:22:44,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:22:44,160 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. Second operand 3 states. [2018-12-03 15:22:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:22:44,200 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2018-12-03 15:22:44,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:22:44,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-12-03 15:22:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:22:44,201 INFO L225 Difference]: With dead ends: 11 [2018-12-03 15:22:44,202 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 15:22:44,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:22:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 15:22:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 15:22:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 15:22:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-12-03 15:22:44,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-12-03 15:22:44,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:22:44,207 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-03 15:22:44,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:22:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-12-03 15:22:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 15:22:44,208 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:22:44,208 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-03 15:22:44,208 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:22:44,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:22:44,209 INFO L82 PathProgramCache]: Analyzing trace with hash 894489354, now seen corresponding path program 1 times [2018-12-03 15:22:44,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:22:44,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:22:44,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:22:44,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:22:44,210 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:22:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:22:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 15:22:44,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:22:44,300 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 15:22:44,301 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-03 15:22:44,304 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9], [15], [17] [2018-12-03 15:22:44,369 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 15:22:44,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 15:22:44,617 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 15:22:44,619 INFO L272 AbstractInterpreter]: Visited 5 different actions 27 times. Merged at 3 different actions 11 times. Widened at 2 different actions 4 times. Found 7 fixpoints after 3 different actions. Largest state had 0 variables. [2018-12-03 15:22:44,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:22:44,631 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 15:22:44,684 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 66.67% of their original sizes. [2018-12-03 15:22:44,685 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 15:22:44,713 INFO L418 sIntCurrentIteration]: We unified 5 AI predicates to 5 [2018-12-03 15:22:44,714 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 15:22:44,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 15:22:44,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2018-12-03 15:22:44,715 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:22:44,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 15:22:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 15:22:44,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 15:22:44,716 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2018-12-03 15:22:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:22:44,837 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2018-12-03 15:22:44,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 15:22:44,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-12-03 15:22:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:22:44,838 INFO L225 Difference]: With dead ends: 8 [2018-12-03 15:22:44,838 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 15:22:44,838 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 15:22:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 15:22:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 15:22:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 15:22:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 15:22:44,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-03 15:22:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:22:44,840 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 15:22:44,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 15:22:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 15:22:44,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 15:22:44,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 15:22:45,073 WARN L180 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-12-03 15:22:45,089 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 53) no Hoare annotation was computed. [2018-12-03 15:22:45,090 INFO L444 ceAbstractionStarter]: At program point L31(lines 31 36) the Hoare annotation is: false [2018-12-03 15:22:45,090 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 53) no Hoare annotation was computed. [2018-12-03 15:22:45,090 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 53) no Hoare annotation was computed. [2018-12-03 15:22:45,090 INFO L451 ceAbstractionStarter]: At program point L52(lines 35 52) the Hoare annotation is: true [2018-12-03 15:22:45,091 INFO L444 ceAbstractionStarter]: At program point L48(lines 18 48) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~j~4 0)) (or (and (= ULTIMATE.start_main_~k~4 9) (= ULTIMATE.start_main_~i~4 0)) (= ULTIMATE.start_main_~k~4 4))) [2018-12-03 15:22:45,091 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 37) no Hoare annotation was computed. [2018-12-03 15:22:45,098 INFO L202 PluginConnector]: Adding new model cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:22:45 BoogieIcfgContainer [2018-12-03 15:22:45,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 15:22:45,099 INFO L168 Benchmark]: Toolchain (without parser) took 1844.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-12-03 15:22:45,101 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 15:22:45,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 15:22:45,102 INFO L168 Benchmark]: Boogie Preprocessor took 21.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 15:22:45,103 INFO L168 Benchmark]: RCFGBuilder took 328.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 15:22:45,104 INFO L168 Benchmark]: TraceAbstraction took 1453.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-12-03 15:22:45,109 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 328.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1453.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !(main_~j~4 == 0) && ((main_~k~4 == 9 && main_~i~4 == 0) || main_~k~4 == 4) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: true - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.6666666666666666 AbsIntWeakeningRatio, 0.6 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...